Telephone system



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TELEPHONE, SYSTEM Filed Feb. ll. 1953 37 Sheets-Sheet 5 Oct. 8, 1957 R. B. TRQUSDALE 2,809,235

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TELEPHONE SYSTEM Filed Feb. 11, 195s sv sheets-sheet 1v Oct 8, 1957 R. B. TRousDALE 2,809,235

TELEPHONE SYSTEM Filed Feb. ll, 1953 37 Sheets-Sheet 18 Oct. 8, 1957 R. B. TROUSDALE TELEPHONE SYSTEM 37 Sheets-Sheet 19 Filed Feb. ll, 1953 Oct. 8, 1957 R. B. TRousDALE TELEPHONE SYSTEM 37 Sheets-Sheet 20 Filed Feb. ll, 1953 f .Emmmk JRS wr 

